Yarn handling machine



Feb. 17, 1942. A, E- WINSLOW 2,273,2414

YARN HANDLING MACHINE Filed Feb. ll, 1941 3 Sheets-Shea?l l -INVE/vron e/* Wins/a w A TTORNEYS.

Feb. 17; 1942. A, E WINSLW 2,273,241

YARN HANDLING MACHINE Filed Feb. l1, 1941 3 Sheets-Sheet 2 A TTORNEYS.

. Feb. 17, 1942. A. E. wlNsLow YARN, HANDLING MACHINE 3 Sheets-Sheet 3 Filed Feb. 11, 1941 A m n m ByDQa/wm y ATTORNEYS.

Patented Feb. 17, 1942 U .N vVTFED .STATES PATENT `OFFICE YARN HANDLING MACHINE Albert E. Winslow, New London, Conn., assignor to Atwood 'Machine Companyya corporation of vConnecticut.

9 Claims.

theflocation of thepackage in the machine makes darling somewhat awkward.

One of the objects of this invention is to provide amounting forthe mandrel of a yarn packageso that, should the yarn break, this mandrel will be ,swung away from the driving drum through a substantial yarc from a position inward of the machine to a position out in front of the machine where it is readily accessible.

Another object of the invention is to provide afmovement of the delivery package of yarn such that upon failure of the yarn and movement of the package it will be in such a position that it is 'readily AVisible to notify the operator that he lnaypiece-up the broken ends yor doff the bobbin or dowhatever is necessary for the continuance of operation of this unit of themachine.

Another object of the invention is to provide an arrangement by which the yarn package will be swung from its operative position to its inoperative yposition upon the tripping of a lever or -latch and -yetthe Ynormal swinging of the arm dueto 'the building up of the package when the yarn is operating properly will be permitted without danger of tripping thelatch which results rin movement of the arm to its inoperative position.

Another object of the invention yis to retard the swinging of the arm as it progresses from its operative position to its inoperative position sothat--it will lcomefto -rest in its inoperative positionl gradually andwithout jar.

With these and other objects in View, the invention consists of certain novel features of construction, as will be more fully described, and particularly pointed out in the appended claims.

In the accompanying drawings:

Fig. 1 is a top plan vView of a portion of the twister frame which embodies the mounting of the arm to which this invention relates;

Fig. 2 is a sectional view through the twister frame, showing `in kelevation the parts shown in Fig. 1 and illustrating in dotted lines the full package which has been-built up on the mandrel;

Fig. 3 is a -view similar to Fig. 2 but with some parts omitted and illustrating the package as swung to inoperative position;

Fig. 4 -is asection through the mounting of the swinging arm;

Fig. 5 is a section on line 55 of Fig. 4;

Fig. 6 isa section on substantially line 6 6 of Fig. 4;

Fig. '7 is a -fragmental detail illustrating a portion of the yarn tension and traverse motion which trips the latch lwhich holds the yarn in working position;

Fig. 8 is a section on substantially line '8-8 of Fig. 7

Fig. -9 is aplan view, partly broken away, of a part of the tensionA rcd assembly and its mounting bracket.

This invention is directed to the mounting of the mandrel which-is shown and claimed indetail -i-n my copending application, Serial No. 369,682, filed December 11, 1940, now Patent No. 2,250,560, and consists in vthe provision of an arm which is hinged Vor pivotedfin a location forward of nthe driving drum to extend rearwardly to permit Vthe :surface of the package on this mandrel to rest on the driving drum to be built up tothe desired size, and without interfering with the motion of thearm for the limited arc that it swings for the'building up of the package, kI provideian arrangement which will act on the arm through its hinge'or pivotal connection upon the breaking of the yarn to swing the arm from the rearward extending position which it assumes in the working position of the package through an arc of nearly 180 degrees so as to present this package in front of the machine where it may be easily accessible,

With reference to the drawings, I 0 designates a longitudinally extending portion of the frame- Work of the machine which supports the overarms I I extending on either side of the machine. These arms are adjustable as to height about the rod I2 by means of the screws I3 and nuts I4 which clamp them in position to limit the amount of swing of the overarms about the rod i2. `Driving drums I5 are xed to the shaft I6 extending lengthwise of the machine for driving the yarn packages which are supported on the individual mandrels I'l. One unit is-shown and1this package consists of a core IB in Fig. 1 to which the yarn I9 is led through the traverse guides 20 and tension bars 2| and 22 and over rod 23 as the yarn is drawn through the pig-tail guide t24'from the supply package.

The `mandrel I'I is supported on an arm 26 which is hinged or pivoted 'at the forward end of the overarm I the details of which mounting form an important part of this invention and are illustrated more fully in Figs. 4 and 6.

The arm is provided with a circular ange 21 which provides a bearing surface 28 for the enlarged cupped end 29 of the tubular hub 38 of the arm 26, whereby the arm 26 is rotatably or hingedly mounted upon overarm which is a fixed part of the frame. A shaft 3| having a flange 32 is xed to the enlarged portion of the end of the arm in a recess 33 provided therefor to extend at generally right angles from one side thereof, the shaft being held in place by the bolt 34 extending from the opposite side of the arm through an opening therein and into the shaft 3|. A pin 35 may be provided on the flange 32 to enter a hole 36 in the arm to lock this shaft against rotation. A cylindrical member 31 is rotatably mounted upon shaft 3| and has one end of a tension spring 38 extending into a recess therein. A slot 39 is provided in this rotary member and receives a pin 40 which is fixed in the hub portion 30 along the bottom of the cup portion thereof. The slot 39 is so located and of such extent that the normal swinging movement of the hub 30 during the building of the package from empty to full size will be permitted without pin 40 engaging the ends of the slot 39 of the rotary member 31.

The other end of the spring 38, designated 42, extends into the opening 43 in a head 44 which head is rotatably mounted upon shaft 3| and held in position against axial displacement by spring washer 45 and slot 46 at the end of this shaft. A pin 41 is located in recess 48 and pressed by spring 49 outwardly to engage any selected opening 50 to hold the head 44 in adjusted rotary position. The pin 41 is shouldered to prevent it from passing completely through the selected opening 56. Thus, it will be seen that by rotation of the head 44, a desired tension may be placed upon the spring 38. This head is also shouldered, as at so as to hold the hub 30 against axial movement from its bearing 28.

The spring 38 is loaded by means of the head 44 in a direction so that the rotary member 31 will turn to cause the end 53 of this slot 39'to engage the pin 40 and move the hub in such a direction that the arm 26 will be swung from the position shown in Fig. 2 to the position shown in Fig. 3.

A notch 54 is provided in the rotary member 31 (see Fig. 6) and a latch 55 pivoted as at 56 will extend into the notch 54 and will be so weighted by its tail portion 51 that the latch will tend to swing about the pivot to cause its projection 58 to enter this recess 64. A handle 59 is provided for manually withdrawing the latch when desired.

The tail portion 51 of this latch is bent as at 60 to provide a camming surface to be engaged and moved by an element of the traverse motion mechanism about to be described.

The traverse bar 6| of the traverse motion mechanism carries a bracket 62 (see Figs. 8 and 9) having a portion 63 to rotatably mount the stud 66 having a head 65 carrying bars 2| and 22 through which the yarn extends. This stud 66 is held in adjustable position on the bracket by nut 64 having a threaded engagement therewith and binding the head to the bracket through collar Y1|) and washer 1|. A plurality of openings 12 are provided in the bracket and. a pin 13 is provided on the head 65 so that the tension 4member may be secured in different adjusted positions for applying more or less tension on the yarn. The rod 23 is carried by member 68 which is rockably mounted upon the collar 10 being of a thickness less than that of the collar so as not to be bound upon tightening of the nut 64. This member 68 has an enlarged projecting portion 69, as shown in Fig. 8. The yarn extends over the rod 23 and over rod 2| and beneath rod 22. The heavy projection 69 of this member 68 tends to swing the rod 23 about the collar 10 as a pivot so that this rod will engage the yarn Where it is held against further rotation so long as the yarn is running in tensioned condition. If, however, this yarn slackens or fails, then the weighted portion 69 swings this member 68 around the collar 10 as a pivot until the rod 23 engages the stop 14 carried by the bracket 62. This portion 69 will then be so located with respect to the camming portion 60 that on reciprocation of the traverse, it Will engage and move this camming portion 6D to withdraw the latch 55 from the recess 54.

When this latch is withdrawn, the rotary member 31 under its spring loading rotates to engage the pin 49 .and swing the arm 26 forwardly through an arc of nearly degrees. In order that momentum will not be built and there will not be a sudden shock when this arm reaches the end of its swing, I have caused the surface 8| of the cup-shaped hub 29 to be in the form of a cam progressively increasing its radial distance, while a spring-pressed pin 82 in the overarm I, forced by means of spring 83 against this cam surface, will tend to retard the swinging action, applying greater pressure as the swinging progresses, so that the arm will be almost stopped when it reaches the end of its swing, under influence of the spring 38.

In the operation of the device, the yarn |9 is drawn from a supply source through the guide 24 over the rod 23, then between the tension bars 2| and 22 and onto the core I3 positioned on the mandrel |1. With the yarn properly tensioned, the extending portion 69 of the pivoted member 68 will be positioned at a location spaced vertically from the cam surface 60, by reason of the pull of the yarn |9 on the rod 23 carried by this member 68. At this location the portion 69 will be out of line with the cam surface during the reciprocating movement of this part of the traversing mechanism and the yarn Will build up on the core |1 in a usual Way. However, should the yarn extending between the supply source and the package being formed break or become unduly slack, then the weighted member 68 will be permitted to rock by gravity action about the collar 10. The rocking of the member 68 will position the extending portion 69 at a location to be in a path of travel in line with and engage, during the reciprocal movement of the traverse bar 6|, the cam surface 69. This action will move the latch 55 from engagement with the recess 54 provided in the cylindrical member 31. This will free and permit the charged spring 38 carried by the hub portion 30 of the swingable arm 26 to function in a manner and through the mechanism heretofore described to move the arm 26 in an outwardly direction with respect to the machine to which the device is attached to present the package being formed at a readily accessible location at the front of the machine.

If the package has reached its desired, finis-hed size, the operator may cause the arm 26 to swing outwardly by manually engaging the handle 55 and withdrawing the latch by a swinging movement.

I claim:

1. In a yarn packaging machine, a driving drum, a mandrel for rotatably mounting a yarn package to be driven by said drum, an arm having a hollow pivoted hub for supporting said mandrel, a spring-loaded rotatable member within said hollow hub and operatively connected thereto and responsive to the breaking of the yarn to swing said arm about its pivot away from the driving drum.

2. In a yarn packaging machine, a driving drum, a mandrel for rotatably mounting a yarn package to be driven by said drum, a yarn guide positioned closely adjacent to said drum, an arm for supporting said mandrel, a pivot located in front of said drum for pivotally mounting said arm to swing said mandrel from a position adjacent'said guide to a position to locate said pivot between said guide and mandrel, a torsion spring for loading the arm to move it about its pivot, a latch for preventing operation of the spring, and means responsive to breaking of the yarn for en gaging and withdrawing the latch.

3. In a yarn packaging machine, a driving drum, a mandrel for rotatably mounting va yarn package to be driven by said drum, an arm for supporting said mandrel at one end and provided at the other end with a hollow hub rotatably mounted on a ixed part of the machine, a springloaded rotary member within said hub, a slot and pin connection between said hub and member whereby movement of the member through an arc greater than said slot will move the hub, a latch for holding the member against rotation, and means responsive to breaking of the thread for withdrawing said latch.

4. In a yarn packaging machine, a driving drum, a mandrel for rotatably mounting a yarn package to be driven by said drum, an arm for supporting said mandrel at one end and provided at the other end with a hollow hub rotatably mounted on a fixed part of the machine, a xed pin within said hub, a member rotatably mounted on said pin, a spring encircling said pin for loading said member, a slot and pin connection between said hub and member whereby movement of the member through an arc greater than said slot will move the hub, a latch for holding the member against rotation, and means Iresponsive to breaking of the thread for withdrawing said latch.

5. In a Ayarn packaging machine, a driving drum, a mandrel for rotatably mounting a yarn package to be driven by said drum, an arm :for supporting said mandrel at one end and provided at the other end with a hollow hub rotatably mounted on a nxed part of the machine, and means for exerting a force on the outer surface of said hub for retarding the movement thereof,

said hub and means being so constructed and arranged that increasing retardation occurs as the arc of movement of the hub increases.

6. In a yarn packaging machine, a driving drum, a mandrel for rotatably mounting a yarn package to be driven by said drum, an arm for supporting said mandrel at one end and provided at the other end with a hollow hub rotatably mounted on a fixed part of the machine, said hub having a cam-shaped outer surface, friction means engaging said cam surface to apply greater pressure as rotation progresses, and means responsive to breaking of the yarn to rotate said hub.

7. In a yarn packaging machine, a driving drum, a fixed support extending forwardly of said drum, an arm for supporting a yarn package thereon pivotally mounted on said support to swing said package from a position on one side of a vertical plane passing substantially centrally through said pivotal mounting to a location on the other side of said plane to present the package in a more advantageous position for handling, means carried by and arranged to move said arm about said pivotal mounting, said means including a torsion spring, means for locking said arm against movement by said spring, and means responsive to the breaking of the yarn for engaging and releasing said locking means.

8. In a yyarn packaging machine, a driving drum, a Xed support extending forwardly of said drum, an arm for supporting a yarn package thereon pivotally mounted on said support to swing said package from a position on one side of a vertical plane passing substantially centrally through said pivotal mounting to a location on the other side of said plane to present the package in a more advantageous position for handling, means carried by and arranged to move said arm about said pivotal mounting, said means including a torsion spring, means for locking said arm against movement by said spring, and means mounted for movement in the space between said drum and said pivotal mounting and responsive to the breaking of the yarn for engaging and releasing said locking means.

9. In a yarn packaging machine, a driving drum, a mandrel for rotatably mounting a yarn package to b-e driven by said drum, a front yarn guide, a pivotally mounted arm for supporting said mandrel movable to position said mandrel when in working position at a location rearwardly of said yarn guide, a spring for loading and moving the arm about its pivot to position said mandrel at a location forwardly of the thread guide, a latch for preventing operation of the spring, and means responsive to the breaking of the yarn for engaging and moving the latch to permit said spring to move said arm.

ALBERT E. WINSLOW. 

